Back to EveryPatent.com
United States Patent | 5,074,463 |
Suzuki ,   et al. | December 24, 1991 |
To reduce air suction noise in internal air recirculation mode of an air conditioner for an automotive vehicle, a difference in temperature between a target value and an actual value is calculated and the amount of blown air is decreased in the internal air recirculation mode, as compared with that in the external air introduction mode, by reducing a voltage applied to a blower fan motor, only when the calculated temperature difference is a predetermined value or less.
Inventors: | Suzuki; Hiroyuki (Fujisawa, JP); Takehana; Koetsu (Atsugi, JP); Noji; Ikutaro (Yokohama, JP) |
Assignee: | Nissan Motor Co., Ltd. (Yokohama, JP) |
Appl. No.: | 592927 |
Filed: | October 4, 1990 |
Oct 27, 1989[JP] | 1-280152 |
Current U.S. Class: | 236/49.3; 62/244; 165/42; 236/DIG.9; 454/75; 454/145; 454/160 |
Intern'l Class: | F24F 007/00; B60H 001/32 |
Field of Search: | 236/49.3,DIG. 9 165/16,42,43 98/2.01 62/186,244,239,161,163,164,296 |
4358050 | Nov., 1982 | Naganoma et al. | 165/42. |
4408713 | Oct., 1983 | Iijima et al. | 236/DIG. |
4498309 | Feb., 1985 | Kobayashi et al. | 236/49. |
4518032 | May., 1985 | Funasaki et al. | 236/49. |